A three-dimensional finite element model was developed to investigate dynamic response of track-embankment-ground system subjected to moving loads caused by high speed trains. The track-embankment-ground systems such as the sleepers, the ballast, the embankment, and the ground are represented by 8-noded solid elements. The infinite elements are used to represent the infinite boundary condition ...

This study examines the effectiveness of parapets in preventing overtopping failures small-scale homogeneous reservoir dams under seismic loads. In this study, a parapet covered entire width dam crest and was designed to ensure its weight is transmitted crest. The test included four modes: initial mode, first seepage, seismic, second seepage. results show that without crack length expand signif...

Earth-fill dams stability in steady state seepage condition is very important, especially during earthquakes. Numerical software analyses require accurate and realistic modeling of construction stages. Since earth-fill dams are constructed in different layers, so these conditions should be considered in software modeling to achieve a reasonable design. In this study, an earth-fill dam is modele...

Dam models were constructed in an indoor flume to test dam breach failure processes study the seismic signals induced. A simple model was also proposed estimate hydrographs for floods. The results showed that when retrogressive erosion due seepage of continues, it will eventually reach crest at upstream side dam, and then trigger overtopping breaching. corresponding events during evaluated. Cha...

Surat faced the most devastating flood on 7 August 2006. This flood preceded by heavy rains in the catchment areas of Ukai Dam, and consequent massive releases of water from the dam from 6 August through 11 August 2006, inundated the city, and slums were the worst hit. Studies have reported increased mosquito breeding and epidemics of malaria as an aftermath of floods in Mandla1, subsequent to ...

In this paper, the authors give a brief introduction to the earthquake monitoring system newly developed for two dams of a reservoir in North China. The two embankment dams are 66, 56 meters high and 960, 1008 meters long respectively. One of the dams suffered from severe landslide because of the 1976 Tangshan Earthquake, the design PGA of this site is set to 0.25g. Because of the complexity, i...

Nacrtak Forest roads provide access for people to study, enjoy or contemplate natural ecosystems. Therefore, roads are one of the most important tools needed in forestry. Forest roads are built by excavation of soil and rock. Rockfall occurs during construction works, caused by excavated rock pieces on embankment slopes and by blasting of block rock masses. This study analyzes rockfall damage t...

The permafrost degradation is the fundamental cause generating embankment diseases and pavement diseases in permafrost region while the permafrost degradation is related with temperature. Based on the field monitoring results of ground temperature along G214 Highway in high temperature permafrost regions, both the ground temperatures in superficial layer and the annual average temperatures unde...